Basic dye



Feb 192 .v c j 1 534 91" (UNIT ED STATES? PAT WALTER Rome, onnnnsnnu, GERMANY, ASSIGNOR 'ro 'rnnnnii'rnnmknuvonmi.

FRIEDR. BAYER. AND 00., or LEVERKUSEN, mum COLOGNE oivmnnnnmnyom .MANY.

BASIC DYE." I

No Drawing. g Application filed Hay 5, 1923. Serial 1 10. 637,614. p I

To all whom it mag concern: 1 l v R stands for alkyl'or' aryl: ior' Be it' known that I, YVALTER Kome',-a orphenylene etc. stands'fo'r citizen of Germany, residing at Dresden A.,-

in the State of Saxonia, Germany, have in- 5 vented new and useful Improvements in 0 Basic Dyes, of which the following is a specification.

I have found that newand valuable basic ail 6 E X Stands for Br, I,

* n n in orcyclammonium salts containing reactive g hfom l to red to blue methyl groups standing in alpha-position to es 3 t i g l the nitrogen e. the alpha-methylindon or or 1 m 6 my m s leninium Salts O fully the following example is g1ven:o 60

15 alkyl grams of the methyl-lodlde of alpha-beta beta-tnmethylindolenine are dissolved in i l 100 cubic centimeters of hot acetic acid anhydride. I 3 grams of ortho-formic-ethyll, 3 ester are added to this solution which is kept boiling in a vessel provided with a reflux N condenser in such a way that the acetic ester and the methyl-iodide split off can go over. akyl X .kfter half an hoiX'f thehproducgion lpfd thin; a ye is comp ete. ter aving isti e o a thiat a-methylbenzoxazoliumand thlazollum the-greater part of the acetic acid anhydride S g the residue is dissolved in boiling water.

V The new dye separates in the shape of steel I X grey glittering crystals. It is soluble in v l hot Water and easily soluble in alcohol with 3o agreenish-yellow fluorescence. It dyes WOOl \N tannin mordanted cotton and collodion silk Blky, x red shades. It has most probably the formula: X stands for Cl, Br, I, SO H, C10 etc. I I 35 My new dyestuffs are after being dried |T( a)2 om)i I and pulverized generally dark crystalline l l C C powders soluble in water generally with a \CH=CH CH/ reddish yellow to bluish coloration. They 2 I/CH; 40 have most probably the following general OH: I f formula:

Y By replacing in the above example the orc a C-(0H):=O thoformic ester by the equivalent quantity of beta-ethoxy-acrole1n-acetal or prop-argyl- 45 N acetal a blue dye results having -most probl R I ably the following formula I V Ha): s)a |l 1 CH3 I ortho-formic ester, which dyes are, after lee-- ing dried and pulverized, generally crystalline powders soluble in water generally with a yellowish to reddish to bluish coloration and dyeing tannin mordanted cotton from yellow to red to violet to blue shades fast to light and washing, substantially as described. I

2. The herein described basic dye having most probably the following formula:

Ma a/$1 9) forming steel grey glittering crystals soluble in hot water and in alcohol with a red coloration showing a greenish-yellow fluorescence; dyeing tannin mordanted cotton red shades, substantially as described.

In testimony whereof I have hereunto set my handa WALTER KONIG. 

